PHP Cache_Lite 下载及使用

https://github.com/pear/Cache_Lite

composer require pear/cache_lite
composer如果提示root不安全 可以切换为www用户  su - www -s /bin/bash

composer加载原理，有空再研究
http://bazingafeng.com/2016/10/27/composer-introduction/


自动加载有问题，我就把vendor/pear/cache_lite/ 下面的Cache目录单独拷贝出来使用

包含路径需要注意一下

<?php
//require ('vendor/autoload.php');

// Include the package

require_once('Cache/Lite/Function.php');


function get_time()

{
            return date("H:i:s", mktime());

}
// Set a id for this cache

$id = '123';
// Set a few options

$options = array(
     'cacheDir' => '/tmp/',
     'lifeTime' => 3 

);
$objCache = new Cache_Lite_Function($options);
// cache the call to the get_time() function

// if return value is present in cache,

// Cache_Lite_Function will fetch it from the cache

// else the function will be called and the result returned

$time = $objCache->call('get_time');
echo "The cached time is " . $time . ". The real time is " . get_time();